Sergey Bylikin, Gary Horner and, Brian Murphy Solutions for Chapter: Energy, Exercise 9: Questions

Author:Sergey Bylikin, Gary Horner & Brian Murphy

Sergey Bylikin Chemistry Solutions for Exercise - Sergey Bylikin, Gary Horner and, Brian Murphy Solutions for Chapter: Energy, Exercise 9: Questions

Attempt the practice questions on Chapter 24: Energy, Exercise 9: Questions with hints and solutions to strengthen your understanding. Oxford IB Diploma Programme Chemistry Course Companion solutions are prepared by Experienced Embibe Experts.

Questions from Sergey Bylikin, Gary Horner and, Brian Murphy Solutions for Chapter: Energy, Exercise 9: Questions with Hints & Solutions

MEDIUM
Diploma
IMPORTANT

Nuclear power is one potential energy source that does not involve fossil fuels. Current nuclear technology is dependent on fission reactions. Nuclear technology developed very rapidly between 1940 and 1970. Outline why this occurred.

EASY
Diploma
IMPORTANT

Nuclear power is one potential energy source that does not involve fossil fuels. Current nuclear technology is dependent on fission reactions. The equation for a possible nuclear fission reaction is:
U92235+ n10  Sr3890 +Xe54136 + 10 n01 

The masses of the particles involved in the fission reaction are shown below:

mass of neutron= 1.00867 u

mass of U-235 nucleus= 234.99333 u

mass of Xe-136 nucleus = 135.90722 u

mass of Sr-90 nucleus = 89.907 74 u

Determine the energy released when one uranium nucleus undergoes fission according to the reaction above.

MEDIUM
Diploma
IMPORTANT

Nuclear power is one potential energy source that does not involve fossil fuels. Current nuclear technology is dependent on fission reactions. The half-life of strontium-90 is 28.8 years. Calculate the number of years required for its radioactivity to fall to 10% of its initial value.

MEDIUM
Diploma
IMPORTANT

Nuclear fuels require the enrichment of natural uranium. Explain how this process is carried out including the underlying physical principle.

MEDIUM
Diploma
IMPORTANT

Nuclide X has a half-life of 1 day and nuclide Y has a half-life of 5 days. In a particular sample, the activities of X and Y are found to be equal. When the activity is tested again after 10 days, the activity will be

EASY
Diploma
IMPORTANT

Which one of the following diagrams best illustrates the first two stages of an uncontrolled fission chain reaction?

Question Image

EASY
Diploma
IMPORTANT

 When ammonia gas, NH3 reacts with hydrogen chloride gas, HCl the white solid ammonium chloride, NH4Cl is formed:

Question Image

The apparatus shown in figure was set up to test Graham's law. A metre stick is placed beside the tube. Cotton wool soaked in NH3 is placed in the left-hand end and cotton wool soaked in HCl is placed in the right-hand end. A white cloud of solid appears where the HCl and NH3 meet. Assuming the NH3 end to be 0.00 m and the HClend to be 1.00 m on the metre stick, calculate the position at which you would expect the solid NH4Cl to appear.

EASY
Diploma
IMPORTANT

Draw the Lewis (electron dot) structure of the superoxide and hydroxyl radicals. Explain what a radical is and the steps involved in a radical chain reaction. Explain how radioactivity can cause the initiation step.